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Fluctuating WAN IP with Dynamic DNS in Sophos Gateway Firewalls

I was seeking a solution for an issue encountered with my client’s Sophos Gateway Firewall (Site-to-Site IPsec VPN Setup), which was due to the ISP’s PPPoE Service causing frequent changes in the WAN Interface IP.

I’ve learned that Dynamic DNS could be a viable solution for the fluctuating WAN IP. With Dynamic DNS—a third-party service—we can utilize the hostname of the Gateway Firewall instead of the WAN IP. Therefore, my question is: In Sophos Firewall, Can we use the “hostname” in place of the WAN IP in the site-to-site VPN configuration, specifically in the Remote Gateway settings, to accommodate Dynamic DNS?

Edited TAGs
[edited by: Raphael Alganes at 3:18 PM (GMT -7) on 15 May 2024]